EP2856268A2 - Methods for using an automated guided cart - Google Patents
Methods for using an automated guided cartInfo
- Publication number
- EP2856268A2 EP2856268A2 EP13727768.7A EP13727768A EP2856268A2 EP 2856268 A2 EP2856268 A2 EP 2856268A2 EP 13727768 A EP13727768 A EP 13727768A EP 2856268 A2 EP2856268 A2 EP 2856268A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- agc
- cart
- vehicle
- build
- engaging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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- 238000003032 molecular docking Methods 0.000 claims description 22
- 238000012546 transfer Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 17
- 238000003491 array Methods 0.000 description 14
- 241000196324 Embryophyta Species 0.000 description 13
- 239000000463 material Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4189—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the transport system
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4189—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the transport system
- G05B19/41895—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the transport system using automatic guided vehicles [AGV]
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/02—Control of position or course in two dimensions
- G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
- G05D1/0212—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory
- G05D1/0225—Control of position or course in two dimensions specially adapted to land vehicles with means for defining a desired trajectory involving docking at a fixed facility, e.g. base station or loading bay
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/31—From computer integrated manufacturing till monitoring
- G05B2219/31002—Computer controlled agv conveys workpieces between buffer and cell
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/60—Electric or hybrid propulsion means for production processes
Definitions
- the present invention is generally in the field of manufacturing and assembly of vehicles.
- AGVs automated guided vehicles
- AGCs Automated or automatic guided carts
- AGCs have been employed in facilities where less complex, low precision tasks, such as pushing and pulling loads on a semi- predefined and permanent path to a general area, is established.
- AGCs have offered a less expensive, but limited use for applications requiring low precision positional location of the cargo or components being transported.
- the conventional non-precise locating capabilities rendered use of AGCs unsuitable for many applications where the robots which interact with the parts were programmed for precise operations requiring components and subassemblies to be positioned with a high level of precision.
- the present invention includes methods of using at least one automated guided cart (AGC) for engaging and/or transferring one of a plurality of different vehicle build devices.
- AGC automated guided cart
- the AGC can be precision adapted for engaging vehicle build components, or alternatively, can be adapted for precision engagement to a transfer cart, a holding fixture, a tooling fixture or other support structures for the vehicle build components.
- the AGC can be moved along one of a plurality of fixed and predetermined respective paths, and temporarily secured at precision locations in machine manufacturing and assembly facilities where vehicle build components are consumed.
- a plurality of AGCs may be used to respectively engage and/or transfer a plurality of different vehicle build components or respective support structures along respective fixed and predetermined paths of travel to precision locations in machine manufacturing and assembly facilities.
- the AGC can be used to support a build process that requires precise positioning of vehicle build components.
- the AGC is placed in communication with a guide path device, which defines a path for the AGC to follow to an assembly cell that includes a robot or other automated equipment configured to interface with a vehicle build component during a build process.
- the AGC is be precisely engaged with a vehicle build component, subassembly, tooling, fixture or other vehicle build device used during the build process, either directly or indirectly using a support structure.
- the AGC travels along the path according to generally non- precision movement.
- the AGC is secured in a dimensionally fixed position, such that both the AGC and the vehicle build component engaged with the AGC are located in precise positions.
- the robot or other automated equipment of the assembly cell can interface with the vehicle build component according to preprogrammed and/or precise movements to carry out a build process utilizing the vehicle build component.
- a docking station can be implemented proximate the assembly cell to locationally position the AGC.
- the docking station may, for example, include location rollers configured to progressively engage with locator pads of the AGC to locationally position the AGC in all three dimensions with respect to path followed by the AGC.
- Figure 1 is a schematic of an example of an assembly facility useable with the present invention
- Figure 2 is a perspective view of an example of an automated guided cart
- Figure 3 is a cutaway view of the example AGC in Figure 2;
- Figure 4 is an alternate perspective view of the example AGC in Figure 2;
- Figure 5 is a cutaway view of the example AGC in Figure 4.
- Figure 6 is perspective view of an example AGC in use with an example of a precision docking station useable with the present invention
- Figure 7 is a left side view of the AGC shown in Figure 6 with portions of the docking station cutaway for ease of illustration;
- Figure 8 is a partial end view of the AGC shown in Figure 6, illustrating the method of docking the AGC with the docking station, with a portion of the AGC cutaway to illustrate a drive wheel;
- Figure 9 is an example assembly component transfer cart useable with the present invention.
- Figure 10 is an end view of an example assembly cell useable with the present invention.
- Figure 11 is a perspective view of an example assembly cell and example tooling shuttle useable with the present invention.
- Figure 12 is a schematic flow chart of an example method of use of the exemplary AGCs described herein.
- AGCs 100 Examples of methods of use of AGCs 100 are described with reference to a vehicle assembly plant illustrated in Figure 1 having a part delivery system 10 and an exemplary floor plan 14.
- the system 10 is used for assembling body-in- white (BIW) vehicle body structures 58 in various stages of assembly. It is understood that other applications for the methods of use may be used in many other manufacturing and assembly operations, for example powertrain and final assembly, for vehicles or other devices, as known by those skilled in the art.
- BIOS body-in- white
- the system 10 includes a material entry area 20, a material sequencing or staging area 30, and a plurality of main assembly lines 38 (six shown and identified as 40, 42, 44, 46, 48, 50).
- Each assembly line 38 includes a vehicle travel path 60 running down each line 40-50.
- Other assembly line 38 configurations, orientations and vehicle paths 60 known by those skilled in the art may be used.
- material entry area 20 is a large area in the assembly plant floor 14 used for the organization and storage of individual components or subassemblies of components (not shown) which are to be assembled and connected together at selected assembly cells or build stations 56 (seven stations for each line 38 shown) at the assembly lines 38 to produce a product or part, for example, an automotive vehicle body 58.
- assembly plants or build stations 56 even stations for each line 38 shown
- Other structures, methods, features, configurations and functions of the exemplary plant floor 14 useable with the system 10 are disclosed and illustrated in U.S. Patent Application Nos. 13/151,684 and 13/483,156 assigned to the assignee of the present invention and incorporated herein by reference.
- an assembly plant facility may have separate areas where tooling/fixtures, vehicle components or subassemblies are built or stored.
- other plant equipment such as maintenance components, maintenance equipment and devices known by those skilled in the art may also need to be transported to other areas in the facility where they are needed. It is further possible to have such parts or equipment stored adjacent to the assembly lines or assembly cells as in conventional assembly plants. Other plant configurations and logistics known by those skilled in the art may be used with the present invention.
- guided cart 100 includes a body 100 having a front 110, rear 116, sides 120 and top surface 126 having access panels 128.
- guided cart includes a power source 130, preferably a rechargeable battery pack, one or more drive motors 140 to power drive wheels 146, omni-directional castors 150 and a scanner 154 to detect objects in the path of the guided cart when in motion.
- the guided cart 100 further includes a processing unit, memory, controller and other electronic devices (illustrated, but not specifically identified) known by those skilled in the art to operate as an AGC to accomplish the features and functions described herein.
- Guided cart 100 further includes a guidance system, preferably in the form of a sensor which detects one of a plurality of cart guide path devices 134 preferably secured to plant floor 14 along a predetermined path of travel, for example 56 or 78, discussed further below.
- the cart guide path device 134 may be in the form of tape, paint, wire or
- the sensor tracks and follows the guide path device 134 thereby defining the predetermined and fixed path of travel for the cart 100, until a new cart path is desired and implemented in the manner above for the cart 100.
- cart 100 includes a plurality of precision-located hole arrays 160 (in top surface 126) each having at least one, and preferably several, precision threaded holes 164 through the cart body, and most preferably the top surface 126 as generally shown (four arrays shown adjacent the corners of the cart).
- the holes 164 are designed to be precisely and accurately located in three-dimensional space (x, y and z coordinate directions) relative to other portions of the cart 100, for example first 170 and second 176 locator pads.
- Holes 164 are preferably threaded with common machine threads or may take other forms for positive connection of other fasteners or devices to suit the particular application.
- Precision holes or hole arrays 160 may be on other areas of the cart 100 as well (bottom, sides, ends). In alternate examples, the precision holes may be in the form of other attachment points such as precision located pins, bosses, hooks, eyes or other engagement or locating devices (not shown) known by those skilled in the art.
- the exemplary guided cart 100 includes the first 170 and second 176 locator pads on each side 120 as best seen in Figures 6 and 7.
- first locator pad 170 is positioned toward the cart front 110 at a higher elevation than the second locator pad 176 positioned toward the rear 116.
- each pad 170, 176 includes a first locating surface 180 positioned toward floor 14 and a second locating surface 190 which may generally vertical or parallel to sides 120.
- first locating surface 180 has an arcuate shape with leading and trailing edges angled downward toward a center detent position 186 as further described below.
- Locating pads 170 and 176 may further include precision holes or other areas (not shown) on the first 180 or second 190 locating surfaces for precision location of fasteners, attachment or other accessories to cart 100. [0031] As with the hole arrays 160, the position and orientation of the pads 170 and 176 may further include precision holes or other areas (not shown) on the first 180 or second 190 locating surfaces for precision location of fasteners, attachment or other accessories to cart 100. [0031] As with the hole arrays 160, the position and orientation of the pads 170 and
- pads 170 and 176 are precision located relative to the rest of the cart 100 and particularly to the hole arrays 160 and individual holes 164.
- the precision location of pads 170 and 176 may be established by including additional precision holes or hole arrays (not shown) similar to hole arrays 160 so that the pads 160 can be locationally positioned to close dimensional tolerances to the cart or other features of the cart, for example hole arrays 160.
- Other shapes, configurations and numbers of locator pads 170 and 176 to suit the particular application or specification may be used.
- Locator pads 170 and 176 may further be oriented and positioned in different locations on cart body 106 other than the sides 120 as illustrated.
- a docking station 200 is used to temporarily secure the guided cart 100 in a firm, dimensionally fixed position while a precision assembly process is executed as further described below.
- docking station 200 includes a base 206, a first pillar 210, a second pillar 220 and a plurality of anchors 222 to dimensionally locate and reinforce the pillars from unwanted movement relative to the base.
- base 206 is rigidly secured to plant floor 14.
- base 206, pillars 210 and 220 are positioned in an assembly cell or build station 56 are precisely dimensionally located relative to the assembly cell and path of travel 56, 78 as further described below.
- each pillar 210 and 220 of the exemplary docking station 200 includes a precision vertical locating roller 230 on a vertical axis and a precision horizontal locating roller 226 on horizontal axis as generally shown.
- rollers 226 from the respective and opposing pairs of pillars 210 and 220 on either side of path 56, 78 contact the adjacent locating pad 170 and first locating surface 180 to locate and precisely position the cart 100 in the vertical (Z coordinate) direction.
- Vertical locating rollers 230 contact the locating pad second surfaces 190 to precisely position the cart 100 laterally (Y coordinate) direction.
- rollers 226 after sufficient progression of the rollers 226 along first locating surface 180, horizontal rollers 226 will lodge into the detent 186 thereby positively and precisely locating the cart 100 in the longitudinal direction along path 56, 78 (X coordinate) direction and vertical (Z coordinate) direction.
- the drive rollers 146 are compliantly mounted to the cart 100, so that they remain engaged with the floor 14 even when the rollers 226 slightly lift the cart 100 into a precise Z location.
- the drive motor driving the cart drive wheels 146 is temporarily stopped or disengaged until the predetermined assembly operation is completed as further discussed below.
- the precision hole arrays 160 are thereby precisely positioned relative to the docking station 200 and assembly cell 56 robots (or other plant equipment). Docking station 200 may be made from different components and configurations known by those skilled in the art.
- cart 100 is used to transport a plurality of different vehicle build components from one or more locations along a predetermined path defined by guide path device 134.
- vehicle build components according to various examples could be vehicle component parts, vehicle subassemblies or partially assembled vehicle bodies, as described below. Due to the various features described and illustrated, for example the precision hole arrays 160, cart 100 can be easily and quickly configured to transport a desired payload for precise positioning in selected areas of an assembly facility.
- cart 100 is used to engage and transport a part or component transfer cart 240 along one or more assembly lines.
- Figure 9 illustrates a cart 240 which is further described in Patent Application No. 13/151,684 assigned to the assignee of the present invention and incorporated herein by reference.
- cart 240 is loaded or stocked with selected vehicle build components (not shown) using support rails 250, 256.
- the selectively loaded components are then selectively removed from the carts by workers, robots or other devices and used to support a series of build stations or assembly cells along an assembly line, for example lines 40-50 in Figure 1.
- One objective of the cart 240 is to stock it with vehicle build components specific to a type of vehicle to be built in a staging area of the facility and then sequence the carts according vehicle build schedule so the specific components for a vehicle are adjacent the assembly cells as that particular vehicle progresses along the assembly line and process.
- cart 100 may include one or more engagement pins fixed to the cart 100 relative to threaded holes 164 (not shown) selectively extending upward from top surface 126. These pins would be positioned and oriented in coordinated holes or openings in the underside of cart 240. On a predetermined position of the guided cart 100 relative to the part cart 240, the pins could be actuated to extend into the coordinating holes thereby locking the guided cart 100 to the part cart 240 for secure travel. Other methods of selective and temporary engagement of the cart 100 to component cart 240 known by those skilled in the art may be used.
- guided cart 100 may have a coupler (not shown) positioned on the front 110 or rear 116 to push or pull the cart 240.
- Other methods of connecting guided cart 100 to component carts or other component carrying devices or fixtures known by those skilled in the art may be used.
- the cart 100 method is able to achieve positional accuracy and/or precision of +/- 0.5 millimeters (mm) versus conventional automated guided cart's accuracy of +/- 5.0 mm.
- a predetermined path of travel 78 (or 82 or 90) would first be designated using the guide path device 134.
- cart 100 would be positioned to engage one cart 240 and thereafter transport the cart 240 along the path of travel 78 until the cart 240 is depleted of parts.
- cart 100 would temporarily stop at each assembly station 56 along path 60 while a particular build process is completed using the components transferred by the cart 240 and then move to the next station. If the particular assembly cell 56 or operation required precision location of the cart 100 and/or components thereon, a docking station 200 could be employed at the station.
- the path 78 would return the cart 100 to the material sequencing area 30 for the cart 240 to be reloaded with components before returning to the assembly lines 40-50.
- a vehicle sheet metal body or body-in-white (BIW) 58 is secured to cart 100 and transported through successive assembly cells 56 directly along the path of travel 60 through one or more of assembly lines 40-50.
- a system of parallel, floor-mounted powered rollers support a pallet which the body 56 is connected to is selectively moved down path 60 from station to station.
- the powered rollers, pallets and associated controls require a substantial amount of precision manufactured and installed infrastructure to support and guide the pallets and connected subassembly 58 through the assembly lines 40-50.
- U.S. Patent No. 7,416,130 assigned to the assignee of the present invention and incorporated herein by reference.
- a minimal yet accurate infrastructure body or component holding fixture 300 is connected directly to the cart 100 by threaded bolts through several holes 164 in the precision hole arrays 160 to precisely position and secure body 58 to the cart 100.
- the subassembly or body 58 can then be positioned on the fixture 300 connected to the cart 100, for example fixed locating pins atop the fixture 300 through precision or datum holes (not shown) in the sheet metal in body 58.
- Other methods for connecting the body to fixture 300 and the fixture to 300 to the cart 100 known by those skilled in the art may be used.
- assembly cell 56 includes a docking station 200 to positively and precisely locate the guided cart 100, and thereby body 58 (or other device to be built/assembled), relative to the assembly cell 56.
- assembly cell 56 includes a scaffolding structure 276 on either side of the assembly line 60 defining a work area 278 therebetween.
- Example cell 56 includes a top platform 280 defining a work space 286 in which one or more inverted robots 290 and upright robots 294 are positioned and operated to selectively access work area 278 and carryout predetermined assembly operations through controls 282 as generally shown. Further details of the assembly cell 56 are described and illustrated in US Patent Application Nos. 12/262,722 and 12/269,955 assigned to the assignee of the present invention and incorporated herein by reference.
- guided cart 100 may be used with a traditional pallet or other fixture or support structure which is used to support the illustrated partially assembled body 56 or other vehicle build component.
- the methods of use may also be employed with more sophisticated vehicle support pallets, for example that described in US Patent Application No. 12/913,908 assigned to the assignee of the present invention and incorporated herein by reference.
- Guided cart 100 can be engaged to the pallet in one of the methods described for the component cart 240 in Figure 9.
- Other forms of fixtures 300 from minimal or complex in structure, orientation and function to suit the particular application or performance specification, known by those skilled in the art may be used.
- An important advantage of using an AGC/guided cart 100 over conventional systems and conventional automated guided vehicles (AGVs) is the lower cost and complexity of the AGCs being guided by the guide path devices 134 versus the high level of control, complexity and costs associated infrastructure and costs of conventional AGVs.
- FIG. 11 In another example of use of AGC/guided cart 100 is shown in Figure 11.
- an overhead conveyor system 310 is employed along one or more of the assembly lines 40-50 to progressively transfer and build subassemblies and bodies 58.
- similar assembly cell structures 270 described in Figure 10 may be used.
- An example of this configured assembly cell is described and illustrated in US Patent Application Nos. 12/262,722 and 13/483,156 assigned to the assignee of the present invention and incorporated herein by reference.
- a tooling shuttle 330 is used which selectively transfers different forms of tooling/fixtures 314, for example for different style vehicle bodies 58, into and out of the assembly cell 56 work area 278.
- Robots 290 remove individual components and subassemblies from component racks 320 and install and connect, for example through welding or adhesive, the components to progressively build the body 58.
- the tooling shuttle employed powered roller conveyors (not shown) similar in concept to the powered roller conveyors described in example 10.
- cart 100 can connect the desired tooling 314 directly to the cart 100 through the precision hole arrays 160 or can employ varying levels of support holding fixtures, for example 300 described in Figure 10, as necessary to suit the particular application and performance specification.
- cart 100 is selectively moved along path 336 defined by guide device 134 to deliver the necessary tooling into and out of the work station for engaging vehicle build components or to support other predetermined build operations in the cell.
- two carts 100 supporting alternate tooling are positioned on either side of work area 278 as generally described in US Patent Application No. 12/262,722 assigned to the assignee of the present invention and incorporated herein by reference.
- one cart may be positioned on either side of the assembly cell with different tooling, for example different vehicle body styles.
- the respective carts 100 can them be reciprocated into and out of the assembly cell working area as needed to support the build.
- one cart 100 may be used to reciprocate into and out of the cell engaging and disengaging the appropriate tooling or parts to support the build. It is understood that variations to the example uses described and alternate uses and processes for system 10 and cart 100 known by those skilled in the art may be used.
- method step or process step 400 includes defining a predetermined and fixed path of travel for cart 100.
- the fixed path may be defined through path device 134 (paint, tape, wire or other materials recognizable by the cart 100 sensor to guide cart 100 along the device 134).
- the guided cart is equipped with precision locating, engaging or mounting features, for example precision hole arrays 160 and/or locating pads 170 and 176 for further use in assembly cells and/or docking station 200 described above and used in the process described below.
- a cart 100 is equipped or configured to directly connect to, or temporarily engage through selected contact with a vehicle build device, e.g., a vehicle build component, subassembly, support rack, tooling/fixtures or other device that needs to be selectively transported from one location to another in a manufacturing facility.
- a vehicle build device e.g., a vehicle build component, subassembly, support rack, tooling/fixtures or other device that needs to be selectively transported from one location to another in a manufacturing facility.
- some form of a transfer cart 240, holding or positioning fixture 300 and/or tooling 310 may first be connected to cart 100 through precision hole arrays 160 or other ways as described above.
- cart 100 may be used to engage vehicle build components or subassemblies with or without devices in step 425 as described.
- step 440 the cart is placed in sensory communication with the guide path device 134 to position the guided cart on the predetermined path, for example 60 or 78 as described above.
- step 460 the guided cart 100 is powered and progressively transferred along the guide path device 134 to one or more assembly lines 40-50 and assembly cells 56 until the desired level of build for the body 58 or other predetermined operation is complete.
- step 450 where precision location of the component, subassembly, tooling/fixture, body 58 or other build device is required for a build or assembly operation, for example in an assembly cell 56, guide cart 100 is temporarily secured in a docking station 200 until the particular build operations for that assembly cell are complete.
- highly efficient assembly devices for example industrial robots 290 and 294 can interact and carryout precision build processes in a work area while reducing or eliminating substantial assembly plant infrastructure previously necessary to deliver components, subassemblies and/or bodies 58 to assembly cells along an assembly line.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automatic Assembly (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL13727768T PL2856268T3 (en) | 2012-05-29 | 2013-05-28 | Methods for using an automated guided cart |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201261652571P | 2012-05-29 | 2012-05-29 | |
PCT/US2013/042883 WO2013181148A2 (en) | 2012-05-29 | 2013-05-28 | Methods for using an automated guided cart |
Publications (2)
Publication Number | Publication Date |
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EP2856268A2 true EP2856268A2 (en) | 2015-04-08 |
EP2856268B1 EP2856268B1 (en) | 2019-04-10 |
Family
ID=48577937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP13727768.7A Active EP2856268B1 (en) | 2012-05-29 | 2013-05-28 | Methods for using an automated guided cart |
Country Status (6)
Country | Link |
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US (1) | US9581983B2 (en) |
EP (1) | EP2856268B1 (en) |
CN (1) | CN104508582B (en) |
ES (1) | ES2733453T3 (en) |
PL (1) | PL2856268T3 (en) |
WO (1) | WO2013181148A2 (en) |
Families Citing this family (32)
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US8915692B2 (en) | 2008-02-21 | 2014-12-23 | Harvest Automation, Inc. | Adaptable container handling system |
US9147173B2 (en) | 2011-10-31 | 2015-09-29 | Harvest Automation, Inc. | Methods and systems for automated transportation of items between variable endpoints |
US8676425B2 (en) * | 2011-11-02 | 2014-03-18 | Harvest Automation, Inc. | Methods and systems for maintenance and other processing of container-grown plants using autonomous mobile robots |
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CN104508582A (en) | 2015-04-08 |
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